1998-2006 Yamaha F20/F25 Outboards Service Manual, Page 175Get this manual
IPOWRI tS: I EXPLODED DIAGRAM
THERMOSTAT, AND
OIL FILTER CARTRIDGE, THERMOSTAT, AND EXHAUST COVER
6.0 Nm (0.6 kg, 4.4 ft Ib) 2nd 12.0 Nm (1.2 kg, 8.9 ft Ib)
17.5 Nm (1.8 kg, 12.9 ft Ib)